welding cast aluminium

[john057]

is there much involved in welding cast aluminum to aluminum? i want to cut a standard cast aluminum inlet manifold and weld on a inlet plenum like the picture below.

 

[Chris Stevens]

Not difficult to weld, but unless the manifold is quite thick material you might get problems with distortion.

 

[Richard.]

Generally it doesn't weld as nice as aluminium but in most cases very weldable. I don't think you'll have too many issues distortion wise as it does dissipate heat well throughout and easier to pull back into shape than ferritic metals. A little pre heat helps with cast Alu welding. Don't localise it mind if you cannot warm the whole part evenly and at a low temp then don't bother doing it.

 

[mark williams]

What's the inlet manifold off?